MICROCHIP PD70211ILQ-TR

An advanced PD interface IC with integrated switching Pulse-Width Modulation (PWM) regulator control for powered devices in PoE applications. It supports IEEE 802.3af, IEEE 802at, HDBaseT, and general 2/4-pair configurations. The front-end includes an advanced classification block that supports 2, 3, 4, and 6 event classification. Using the SUPP_Sx pins, it also identifies the four pairs of cable that actually receive power and generate appropriate flags. The IC features an internal bleeder for discharging the input capacitor of the DC/DC converter rapidly to ensure fast re-detection and port power-up, in case of a sudden removal and re-insertion of the Ethernet cable into the RJ-45. The advanced PWM current-mode section supports synchronous Flyback and Active Clamp Forward topologies, as well as Buck, Boost, and so on.

• Supports IEEE 802.3af/at, HDBaseT, and other 2-pair/4-pair configurations
• Wall adapter support (Rear Aux method)
• PD detection and programmable classification 2, 3, 4, and 6 event classification
• Integrated 0.3 Ω isolating (series-pass) FET
• Inrush current limiting
• Less than 10 μA offset current during detection
• Advanced PWM section
• Lead-free QFN-36 (6 mm × 6 mm) package

• HDBaseT up to 95 W
• IEEE 802.3af and IEEE 802at Power forwarding
• Indoor and outdoor PoE